Socket



Dec. 31, 1929. H. A. BREMER socrgm Filed llay 12, 1926 Patented Dec. 31, 1929 STATES PATENT. OFFICE HARRY A. BREM EB, OF CHICAGO, ILLINOIS, ASSIGNOB TO BREMERi-TULLY MANUFAC:

TUBING. COMPANY, A CORPORATION 01' ILLINOIS SOCKET Application filed May 12, 1928. Serial Ito. 108,513.

. This invention relates to sockets, having reference more particularly to sockets for supporting the tubes of radio apparatus.

One object of the invention is to provide a very simple, inexpensive and efficient socket of the type adapted to support tubes having depending pin electrodes. Another object of the invention is to provide a socket including a tube receptacle, with improved means for supporting the tube receptacle in the socket ase which shall also act as a damper or absorber of vibration. A still further object is to provide, in such a socket, an improved construction for limiting the vertical movement of thetube support relatively to the base and preventing its being accidentally withdrawn from the base when the tube is withdrawn from the supportin member. A still further object is to provi e in a socket of the type mentioned, improved contact devices for the tube electrodes and improved leads between the wiring terminals on the base and said contact devices.

Other objects and attendant advantages of the invention will be apparent to ersons skilled in the art from the following etailed description, taken in connection with the accompanying drawing wherein I have illustrated one practical embodiment of the invention, and in which- Fig. 1 is a top plan view of my improved socket;

Fig. 2 is a bottom plan view; Fig. 3 is a vertical section on the line 3-3 of Fig. 1;

Fig. 4 is a plan view of one form of vibration absorbing sup orting means for the tube holder or guide p ate Fig. 5 shows a modified form of such supporting means; and

Fig. 6 is a view similar to Fig. 3, showing a modification.

Referring to the drawings in detail, 6 designates a hollow rectangular insulating wirin base on and integral with which is a circu l ar upstanding shell 7. 8 designates each of four wiring terminals preferably located at the four corners of the rectangular base 6. The inner wall of the shell 7 is preferably formed with a shallow annular groove or channel 9, in which is seated a ring 10 of soft dead material, such as sponge rubber, felt or the like, well adapted to absorb vibrations and act as adamper.

Mounted on and supported b the ring 10 1s a combined floating guide p ate and contact carrier consisting of a disc 11 restin at its mar inal portion upon the ring 10, and an inward y oil'set depending cylindrical stem 12 that extends through the ring 10 with a sufficiently tight fit to exert a sli ht compressive action on the latter. In 51c guide plate 11 are formed the usual relatively large and small selective apertures 13 and 14 respoctivcl to receive the terminal pins of the tube, and attached to the inner surface of the stem 12 beneath and in line with the holes 13 and 14. are the contact members for the pins, each preferably comprising an elastic sheetmetal strip 15 formed with a. depending bowed. portion 16 having a free lower end and at its upper end integral with the strip 15. The inner face of the bowed member 16 is preferably transversely concaved, as indicated, to fit and slidingly engage the sides of the usual round electrode PlIlS as the latter are inserted through the holes 13 and 14., the contact member 16 being thereby pressed slightly outwardly so as to insure ample and snug .contact with the pin. The contact strips 15 may be attached to the stein member 12 by any suitable means, the simple means herein shown consisting of under-cut recesses 17 in the inner wall of the stem member, and outwardly pressed lugs 18 of the strip swaged into said recesses.

By reference to Fig. 3 it will be observed that the stem 12 extends to a point slightly above the base plate 6 of the socket, while the contact strips 15 extend through a central opening 6 of the base plate slightly below the latter and are formed with horizontally bent ends 15. \Vhen the tube is applied to the guide plate 11 under a downward pressure, the lower end of the stem 12, through contact with the base plate 6, limits the downward movement of the guide plate so as to prevent displacement of the ring 10 from its seat; and, similarly, when the tube is withdrawn, causing an upward pull on the 6, prevent the floating gluide plate from being withdrawn from the ring 10.

The lower ends of the contact strips 15 are electrically connected to the wiring in terminals 8 by wires 19. These wires 19 serve solely as current conductors, and have no function ell 7 and supporting 10 contacts carried thereby.

In Fig. 6 I illustrate a slight modification the stop devices. Here the vibration absorbing member takes the form of a rubber ring 10 interposed between the stem 12' of the ide' plate 11 and the shell 7 of the base 6. his ring is formed on its lower edge with an internal flan e 20 resting on the base 6 and underlying t e lower edge of the stem 12 so that the stem and guide plate are supported thereby. In lieu of using the stems of the contacts to rovide the lower stops, as in Figs. 1, 2 and 3, may form the stem 12' of the guide plate with a plurality of depending lugs 21 extending through the central opening of the base and terminating in laterally bent stops 21 which, through contact with the lower.

side of the base, prevent the guide plate and stem from being ulled' out when a tube is withdrawn. In t is construction also the 40 stems 15 of the contact s rings 16 are formed continuous with reduce or narrowed extensions 22 that are secured to the binding terminals 8 and serve both as current conductors and as supports for the contact springs, but

have no function to support the guide plate and its stem.

I claim- 1. In a socket of the character described,

the combination with a base of insulating mam terial formed with an upstanding annular shell of a floatin circular uide plate apertured to receive t e electro e pins of a tube and formed with a depending annular stem inwardl ofi'set from the periphery of said guide p ate and disposed within said shell, a

ring of vibration absorbing material compressed between said shell and said stem and supportingly engaged with the peripheral portion of said guide plate, and contacts at- I tached to the inner wall of said stem in register with the apertures of said guide plate.

2. In a socket of the character described, the combination with a base of insulating material formed with an upstanding annular shell having an internal annular groove, of a naive t set'from e periphery of said guide plate and 1 disposed wit to support the floating guide plate and the,

late

in the vibration absorbing member and in floating circular guide plate a 'ertured to res electrode pins of a tu e and formed with a de ending annular stem inwardly ofiin said shell, a ring ofvibratio'n absorbing material seated in said annular groove and compressed between the latter and said stem and supportingllg engaged with the peripheral portion of sa' guide late, and contacts attached to the inner wal of said stem in register with the apertures of said guide plate.

3. In a socket of the character described, the combination with a hollow base of insulating material equipped with wiring terminals and formed with an upstanding annular shell of a floatin circular guide plate apertured to receive t e electrode pins of a tube and formed with a depending annular stem inwardly offset from the periphery of said uide plate disposed within said shell with its ower end normally above and out of contact with said base, a ring of vibration absorbin material compressed between said shell an said stem and supportingl engaged with the peripheral portion of said gulde late, contacts attached to the inner wall 0 said stem in' register with the apertures of said guide plate, said contacts extending into said hollow base and formed with laterally oflset end portions, said contact end portions and the lower end of said stem co-operating with said base as stops to limit upward and downward movements of said guide plate when removing and inserting a tube, and electrical conducting wires connecting said contacts with said wiring terminals.

. 4. In a socket of the character described, the combination with a base formed with a vertical annular flange, of a guide plate apertured to receive the electrode pins of a tube and formed with a depending annular stem disposed within the annular flange of said I tachedto the inner wall of said stem below and in register with the aperture of said guide plate.

- HARRY A. BREMER. 

